<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        font {
            color: blanchedalmond;
            font-size: 50px;
        }
    </style>

    <font>hello world </font>


    <script>
        window.alert("日子过得可真快")
    </script>
    <script>
        function myFunction() {
            alert("Hello World!");

        }
    </script>

</head>


<body>

    <button onclick="myFunction()">点我</button>

    <script src="js/aa.js"></script>
</body>

</html>